a=1,b=2.求1/ab+1/(a+1)(b+1)+1/(a+2)(b+2)+...+1/(a+2009)(b+2008)的值?
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/23 17:20:10
a=1,b=2.求1/ab+1/(a+1)(b+1)+1/(a+2)(b+2)+...+1/(a+2009)(b+2008)的值?a=1,b=2.求1/ab+1/(a+1)(b+1)+1/(a+2)(
a=1,b=2.求1/ab+1/(a+1)(b+1)+1/(a+2)(b+2)+...+1/(a+2009)(b+2008)的值?
a=1,b=2.求1/ab+1/(a+1)(b+1)+1/(a+2)(b+2)+...+1/(a+2009)(b+2008)的值?
a=1,b=2.求1/ab+1/(a+1)(b+1)+1/(a+2)(b+2)+...+1/(a+2009)(b+2008)的值?
a=1,b=2.
则1/ab+1/(a+1)(b+1)+1/(a+2)(b+2)+...+1/(a+2009)(b+2009)
=1/1x2+1/2x3+1/3x4+…x1/2010x2011
=1-1/2+1/2-1/3+1/3-1/4+……+1/2010-1/2011
=1-1/2011
=2010/2011
a,b>0,a+b+1=ab ,求ab最小值 求a+b最小值过程!
a(a-1)-(a×a-b)=-5,求(a×a+b×b)÷2-ab
已知集合A={1,a,b}={a,a^2,ab},求a,b
已知a+b=A,ab=A+2008,1-2(a+ab)+(ab-2b)=3A.求a+b和ab的值
已知a+b=A ab=A+2008 1-2(a+ab)+(ab-2b)=3A 求a+b ab的值
已知a+b=A ab=A+2008 1-2(a+ab)+(ab-2b)=3A 求a+b ab的值
ab≠0,(a+1)/a+(1+b)/b=ab/(a+b+1)求a+b的和
已知a,b满足a+b=5,a-b=1,求ab,a^2+b^2-3ab
A={1,a,b},B={a,a^2,ab},且A=B,求实数a,b
已知A+{1,a,b},B={a,a的平方,ab}且A=B,求实数a,b
设集合A{1,a,b,},B{a,a^2,ab},且A=B,求a^2013+b^2012
集合 已知A{1,a,b},B{a,a的平方,ab}且A=B,求实数a,b.
已知a-b=-1,ab=-2,求代数式(3a-4b-ab)-(a-2b+3ab)
已知a-b=2,ab=-1 求(4a-5b-ab)-(2a-3b-5ab)
若a+b=1,ab≠0,求a/|a|+b/|b|+ab/|ab|的值
a/a+1+b/b+1=a+b/a+b+1,且ab≠0,求a+b
实数A,B满足A*A*A+B*B*B+3ab=1,求A+B的值
已知a*a*b*b+a*a+b*b+1=4ab,求a,b的值